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  1. Counterintelligence - Wikipedia

    It includes gathering information and conducting activities to prevent espionage, sabotage, assassinations or other intelligence activities conducted by, for, or on behalf of foreign powers, …

  2. Counterintelligence — FBI

    In collaboration with the National Counterintelligence and Security Center, the FBI released a short film to educate anyone with a trade secret about how they can protect it.

  3. What Is Counterintelligence? - American Public University

    Jul 29, 2025 · What is counterintelligence? Learn how it combats espionage, protects national interests, and is integrated into intelligence and security degree programs.

  4. NCSC Home - DNI

    NCSC provides guidance to help organizations build effective insider threat programs. The foundation of all counterintelligence work is the study of foreign intelligence entities -- to …

  5. COUNTERINTELLIGENCE Definition & Meaning - Merriam-Webster

    The meaning of COUNTERINTELLIGENCE is organized activity of an intelligence service designed to block an enemy's sources of information, to deceive the enemy, to prevent …

  6. What Is Counterintelligence and Why Does It Matter?

    Aug 9, 2025 · Counterintelligence involves information gathering and activities conducted to protect against espionage, sabotage, and other intelligence operations carried out by foreign …

  7. Counterintelligence | government operation | Britannica

    counterintelligence, in government operations, the information and activity related to protecting a nation’s own information and the secrecy of its intelligence operations.